Improvement in carriage-shackle



J. LOW.

Thill Coupling. I No. 86,847. Patentd Feb. 9,1869.

'Wv iwesas In en Zar N. PETERs PHOTO-LITHOGRAFHER, WASHINGTON n C JOHN LOW, OF NEW BRITAIN, CO'NNECTiCUT. I Lotte Patent No. 86,847, dated Felirua'ry 9, 1869.

IMPROVEMENT IN CARRIAGE-SHACKLE.

To all whom it may concern:

scription thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

The nature of my invention consistsin constructing a shoulder upon the rivet, or bolt, by which the two parts of the shackle are held together, so adjusted and operatingupon one of the fiatsurfaces of the shaft-head as to keep the same fromrattling.

And further, in an improved device for oiling the joint, consisting of an orifice in the shaft-head, so adjusted, relatively to a metal roof composing part of the yoke, as to admit oil when the shaft is resting upon the ground, and yet completely exclude all dirt and other foreign matter, when the vehicle to which the shackle is attached is in motion.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

Figure 1 exhibits a vertical section of a shackle embodying my improvements, and

Figure 2 presents a surface View of the same from a point underneath the axle-tree to which the shackle is supposed to be attached.

Figure 3 represents the rivet, or bolt, exhibiting dis tinctly the shoulder, before alluded to, and claimed as a part of my invention.

Inall of these figures, wherever found, a representsthe iron portion of a carriage axle-tree, the woodrportion being seen in fig. 1 immediately above the 'iron. In the drawings, the shackle is attached to the axletree, in\the ordinary manner, by means of the clip I),

in combination with the yoke n.

c 0 represent the iron neck to the carriage-head.

d is the rivet, with shoulder f operating upon one of the flat surfaces of the bolt-head, as seen at u, said shoulder advancing, and pressing with great force upon said flat surface, whenever the screw upon the bolt is tightened.

c 0 represent the orifice for introducing oil, in two positions-the one, when the shaft is at rest and depressed, when, as will be seen, the orifice is expdsed and ready to admit oil; the other position, when the shaft is elevated, and the orifice completely closed, and protected by the leaf or roof g, seen in figsil and 2.

It willgbe seen that this device possesses, among other features superior to the shackles now in use, great facility in admitting oil, and protecting the-same from admixture of foreign and grinding substances; security from rattling, without the use of elastic and perishable substances, and Without resorting to the weakening process of dividing the yoke or the shafthead into two parts, held together by a bolt.

It will be seen, also, that the roof built over, and extending down in front of the shaft-head, divides the strain with the bolt, and thus strengthens the shackle as a whole.

- Disclaiming, as not my invention, all parts alluded to in the drawing, and not hereinafter claimed,

What I claim, and desire to secure by Letters Patent, is-

The roof-like structure, connecting the upper portions of the ears of the yoke, and extending forward and downward over the shaft-head, when combined and operating with the oiling-orifice in the shaft-head, in the manner and for the purpose substantially as described.

, JOHN LOW.. Witnesses O. E. MITCHELL, S. O. DURHAM. 

